From: Robert Klemme <shortcutter@...>
Date: 2011-01-29T00:43:53+09:00
Subject: Re: Each Array Method Skipping first Array position

On Fri, Jan 28, 2011 at 4:26 PM, Chris R. <chris.gogreen@gmail.com> wrote:
> Could someone tell me why in the following code, when it iterates on the
> array 'arraya' it skips the first position?

Does it?

> It is strange because
> immediatley before each is called on arraya, I call inspect and you can
> clearly see the first value is 1800, but the first value out put is
> 1801.
>
> #code start
>
> startyear = nil
> endyear = nil

These assignments are superfluous.

> arraya = []
> currentyearis = false
> puts 'What year should I start with?'
> startyear = gets.chomp
> puts 'What year should I end with?'
> endyear = gets.chomp
>
>
> #assign years including and between start/endyear into array
>
> arraya = (startyear...endyear).to_a

You do not do any checking on the input so you might get a sequence
that you do not expect.

> #iterate on array
>
> puts arraya.inspect
>
> arraya.each do |currentyear|
>  if currentyear.to_i % 4 == 0
>    if currentyear.to_i % 100 == 0
>      puts currentyear.inspect

You probably think somthing is omitted because the line above is
guarded by a condition.  You probably rather want to move this line up
directly behind #each.

>      puts('The Year ' + currentyear + ' is not a leap year.') if
> currentyear.to_i % 400 == 0
>    else
>      puts('The Year ' + currentyear + ' is a leap year.')
>    end
>  else
>    puts('The Year ' + currentyear + ' is not a leap year')
>  end
> end
>
> #code end

Kind regards

robert


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